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Re: [EnergyPlus_Support] Severe Error occuring in the simulation


So basically the coil's control valve is actuating in the wrong direction. For example, if the in comming air is warmer than the fluid in a heating coil, the valve will actuate so as to best try and reach the air outlet temperature setpoint temperature. If that setpoint were colder or warmer than the air, the valve would try and close, because opening would in fact cool the air. So to effectively heat, the valve must close, which is counter the user specified heating action.
The same but inverse situation can happen for cooling coils.  

Mit freundlichen GrüÃ?en- Sent from my iPhone (excuse the brevity)
i. A.
Jean Marais
b.i.g. bechtold
Tel.   +49 30 6706662-23
On 09.05.2014, at 16:26, "<mailto:charlene.lochon@xxxxxxxxx>charlene.lochon@xxxxxxxxx [EnergyPlus_Support]" <<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

>  
> Hello !

> I want to simulate a 3 Zone Building with my own regulation in HVAC. The programm do correctly the simulation, but at the end, I have a severe error occuring 800 time :

> 
> 
> ** Severe  ** FindRootSimpleController: Controller error for controller = "REGEN COIL CONTROLLER"

>    **   ~~~   **  Environment=PERIODE SIMU, at Simulation time=03/16 14:50 - 15:00

>    **   ~~~   **   Controller function is inconsistent with user specified controller action = Normal action

>    **   ~~~   **   Actuator will be set to maximum action

>    **   ~~~   ** Controller control type=Temperature

>    **   ~~~   ** Controller temperature setpoint = 95.00 [C]

>    **   ~~~   ** Controller sensed temperature = 13.46 [C]

>    **   ~~~   ** Controller actuator mass flow rate set to 1.65 [kg/s]

>    **   ~~~   ** Controller actuator temperature = 13.46 [C]

>    **   ~~~   **   Note: Chilled water coils should be reverse action and the entering chilled

>    **   ~~~   **         water temperature (controller actuator temperature) should be below the setpoint temperature

>    **   ~~~   **   Note: Hot water coils should be normal action and the entering hot

> 
>    **   ~~~   **         water temperature (controller actuator temperature) should be above the setpoint temperature

> 
> 
> Can you help me to understand what kind of problem I have here, please ?

> 
> 
> Thanks !

> 
> 
> 



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